Posted by Thomas on May 22, 2013, 12:39 am
Dear Professor Steve Simon,
When we dereived the dispersion relation for a diatomic chain or for a chain with different spring constants (Eq. 10.6) we assumed that the oscillations are longitudinal.
Apparently (?), the same equation is true for transverse oscillations.
What is the physical reason for this?
Thank you!
Best regards,
Thomas
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